Run a full heat recovery unit has three main modes, namely operating mode summer and winter operation mode, operating mode transition season. These three operating modes are more common, it is the most important heat recovery unit, the following, we take a look at these three operating modes full heat recovery unit it. Summer modes of operation: 1, total heat recovery modes: full heat recovery unit in the heat recovery operation mode, refrigerant through the evaporator unit A and total heat recovery unit B, the condenser and the fan does not work; 2, full-cooling operation mode : When the crew did not have heat recovery operation, the unit of the refrigerant through the evaporator and the condenser C, full heat recovery unit B does not work, work mode and normal air source heat pump the same. Winter operating modes: Winter by the four-way valve is switched to the winter operation mode, then converted into an evaporator condenser, evaporator condensate is converted into the condenser. 1, all manufactured DHW mode: Open C evaporator and fan scattered cold, heat recovery unit B is a direct result of the recovery of domestic hot water, condenser A does not work; 2, all manufactured heating and hot water mode: Open evaporation C and casual fan is cold, the heat from the condenser A system to provide winter heating, heat recovery units Collector B is not working. Run mode transition seasons: winter operation mode all Manufacturers DHW mode is the operating mode transition season, the equivalent of heat pump water heaters. 

keywords: Total heat recovery units, heat recovery units, heat recovery units,